Send to "Recipient as Attachment"

redking

Guys,

Hope someone can help!

(Using NAV 2009 R2, Microsoft Office 2007

We can from any screen do:
Actions
Send To: Microsoft Word
and
Send To: Microsoft Excel
or
Print page

but when trying to Send To: Recipient as Attachment our NAV crashes and a window appears with the following error:
Problem signature:
Problem Event Name: DynamicsNavServiceException
Problem Signature 01: Microsoft.Dynamics.Nav.Client
Problem Signature 02: 6.0.32012.0
Problem Signature 03: 4d030e65
Problem Signature 04: Microsoft.Office.Interop.Outlook.dll
Problem Signature 05: 10.0.4504
Problem Signature 06: 3d78ea2c
Problem Signature 07: ce4
Problem Signature 08: ffffffff
Problem Signature 09: System.InvalidCastException
OS Version: 6.1.7600.2.0.0.16.7
Locale ID: 2057

Additional information about the problem:
LCID: 1033
Can someone help?

Cheers
Red